| NUCLEAR PHYSICS |
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Proton Ratio of HL-2A Bucket Ion Source |
YU Li-Ming, LEI Guang-Jiu, CAO Jian-Yong, YANG Li-Mei, JIANG Shao-Feng, HAN Xiao-Yu, ZHANG Xian-Ming, SUN Ping, ZOU Gui-Qing, LU Da-Lun, LIU He, JIANG Tao, DUAN Xu-Ru |
| Southwestern Institute of Physics, Chengdu 610041 |
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| Cite this article: |
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YU Li-Ming, LEI Guang-Jiu, CAO Jian-Yong et al 2010 Chin. Phys. Lett. 27 042901 |
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Abstract For heating the tokamak plasma effectively, the ion source must be capable of producing ions with high proton ratio. The proton ratio, which is found to be more than 65.6% at the ion current of 19.6 A with the extraction voltage of 39.6 kV, is measured with an image spectrograph by Doppler shift effect of Balmer-α-radiation spectrum emitted from fast hydrogen particles. The tendency of proton ratio with the ion density in experiment is almost the same as the mode devised by Zhang et al. Okumura et al. only gave the affection of the plasma volume and ion loss area on the proton ratio, but the relationship between the ion density in chamber and the proton ratio was not presented. We give the relationship.
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| Keywords:
29.27.Fh
29.27.Ac
29.25.Ni
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Received: 13 November 2009
Published: 27 March 2010
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| PACS: |
29.27.Fh
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(Beam characteristics)
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29.27.Ac
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(Beam injection and extraction)
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29.25.Ni
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(Ion sources: positive and negative)
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